x(x+4)=x(x)+4x

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Solution for x(x+4)=x(x)+4x equation: 



x(x+4)=x(x)+4x

We move all terms to the left:

x(x+4)-(x(x)+4x)=0

We add all the numbers together, and all the variables

x(x+4)-(+4x+xx)=0

We multiply parentheses

x^2+4x-(+4x+xx)=0

We get rid of parentheses

x^2+4x-4x-xx=0

We add all the numbers together, and all the variables

x^2-xx=0

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